Key to the species of genus Ropalidia occurring in Goa, India

(modified from Kojima et al. 2007)

1. Propodeum with paired basal carinae, propodeal orifice narrow dorsally (Figs 117, 118, 119).......................... 2 - Propodeum without paired basal carinae, propodeal orifice round dorsally (Figs 120, 121, 122)....................... 4 2. Propodeum with strong punctures between basal carinae; striations lateral to carinae strong (Fig. 119)... tamila Gusenleitner - Propodeum with weak transverse striations and scattered shallow punctures between basal carinae; striations lateral to carinae weak (Figs 117, 118)................................................................................... 3 3. Broad yellow apical band on second tergum, band width in the middle more than one-fourth the length of second tergum (Fig. 123)............................................................................... brevita Das and Gupta

- Narrow yellow apical band on second tergum, band width in the middle less than one-fifth the length of second tergum (Fig. 124)............................................................................... marginata (Lepeletier)

4. Basal angle of second submarginal cell less than 90° (Fig. 125)...................................... stigma (Smith)

- Basal angle of second submarginal cell more than 90° (Fig. 126)................................................ 5

5. Large propodeal valvula with semicircular or rounded-triangle border covering the majority of the part of propodeal teeth in lateral view (Fig. 127)................................................................ jacobsoni (du Buysson)

- Small propodeal valvula barely covering the propodeal teeth (Fig. 128)......................... cyathiformis (Fabricius)